Boiler-injector



2 Sheets-Sheet 1.

W. FULLER.

BOILER INJECTOR.

No. 248,301. Patented 001;. 18,1881.

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UNITED STATES PATENT Orrrca.

W lLLlAM FULLER, 0F MEADVILLE, PENNSYLVANIA.

BOILER-INJECTOR.

SPECIFICATION forming part of Letters Patent No. 248,301, dated October 18, 1881,

Application filed June 24, 1881.

To all whom it may concern Be it known that I, WILLIAM FULLER, a citizen of the United States, and resident of the city of Meadville, county of Crawford, and State ofPennsylvania, have invented a certain new and useful Improvement in Boiler-Injectore, of which the followingis a true and exact description, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, forming partot' this specification.

My present invention relates to injectors for steam-boilers and methods for operating the same.

The object of my invention is to provide a device by means of which the main injector steam-valve and the supplementary steamvalve for operating the in j ector-starter or auxiliary exhaust may both be operated by a single valve-steni,wl1ereby theliabilityofthe engineer in not properly actuatingthem is obviated, besides saving time over those which depend for their operation upon the separate and independent adjustment of two or more valves and valve-handles.

For these purposes my invention consists in the following construction and arrangement, whereby the objects of my improvement are effooted, and which will be firstfully set forth and described, and then pointed out in the claims.

Figure 1 represents a side elevation of a device embodying my invention. Fig. 2 represents a central vertical section of the valve device. Fig. 3 represents a detail sectional view of my improvement.

To enable others skilled in the art to make and use my invention,I will now proceed to describe it in detail,omittinga particular description of such parts of an injector and its appendages as are old and not necessary to a full understaudin g of the present improvement.

In the accompanying drawings, Arepreseuts an injector, which may be ot'any preferred construction. It has communication through pipe B with the water supply or tank, and through pipe 0 with the steam-boiler, and through pipe D with the steam-supply or steam-space of boiler.

Adjacent to or forming part of the injector A is located a starter, E, for the same, which may be an exhaust or ejector subsidiary to the main injector, for the purpose of creating a (Model) I vacuum in the contiguous pipes, and thereby raising the water through pipe B and f lling the injector preliminary to operating the injector; or any other suitable and equivalent device may be employed.

Located in the steam-pipe D, at any suitable point, I arrange my combination-valves, for the purpose of controlling the main steamwalve and starter'valve through the action of a single valve-handle. These valves are preferably arranged within a globular casing, F, suitably arranged for the introduction of the valvestem G, with bearings and packing thereof. The outer end of valve-stemG carries the bandle g for operating it, and it is also provided about midway of its length with a double screw-thread, which I prefer to graduate in its longitudinalmovements with five threads to the inch; but I do not confine myself to any precise arrangement of screw-threads, because I may dispense with them and employ some mechanical equivalent therefor. At the inner end of stem G is the main steam-valve H. This valve has formed or cast with it an inclosed sleeve, It. An extension-nut, h, is also screwed within sleeve h, forming a guide for the spindle G; and beyond nut it, between it and the end of sleeve h, the stem G carries a thimble, g, keyed to said stem, which by its limited lateral play therein provides for the operation of valve H in the manner shortly to be described.

I represents the steam-valve for admitting steam to the starter E of the injector. It is provided with the usual guide-wings, and its stein above the valve-seat is suitably formed with an annular head, i, so that it may be received into a corresponding mortise, 70, made in the lower portion of the actuating gate or plate K. This plate is held in proper position by guideways coma, and is capable of a lim ited vertical movement therein for the purpose of raising andlowering valveLhereinalter set forth. Through the gate or plate K is pierced an opening, it, considerably larger in diameter than the spindle or valvestem G, which passes through it, and the upper half, or thereabout, ot' the periphery of said opening 70 is made the sides thereofforming a double downwardlyplane. (See Fig. 1.)

tending incline, whose vertex lies in thelowestwedge-shaped or V-shaped in its cross-section,

L represents a collar, keyed to or formed with the valve-spindle G, a transverse sect-ion ofwhich is also V-shaped or triangular in form, so as to present two oppositely-inclined faces to those formed within the upper portion of the opening it of gate K.

M represents the steam-pipe leading from valve I to starter or cXhauster E of injector. Theoth-er portions ofan injector apparatus will not require to be particularly set forth, as they are known to those skilled in the art, and will therefore be referred to only so far as to give an intelligent description of the operation of my improvement.

The working of my invention is as follows: When the injector is notin operation the position of the parts are as relatively shown by the drawings. It, now, it is desired to set the injector in action, the handle or lever g of spindle G is revolved so as to gradually withdraw the same from its casin g. This operation will first have the effect of causing incline b of collar L to strike incline d of gate K. Upon continuing this operation the further lateral progress of COHHJI G will force gate K upward through said inclines b and d, and thereby unseat valve I, covering pipe M. The steam-pipe D being connected with the steam-space of the boiler, steam will thereupon rush through pipe M to the exhaust of starter E and setit in operation, the efl'ect of which will be to form a vacuum in pipe B, and consequently raise the water through said pipe audfill theinj ector, the double check-valves in the boiler-pipe serving to prevent any back-pressure from the boiler. Upon continuing the operation of handle 9 in the same direction the collar G will pass from under plate K, when said plate will fall and seat valve I, shutting off steam to the starter E. Just before, however, valve I is seated the thimble g reaches the limit ofits play, when it bears against the projection of nut h and unseats the valve H, in order to hold and force the water alreadyraised by jet-valve I through pipe M to ejector-starter E. this valve opens free communication through pipe I) to injector A, causing it to be set in operation in the'usual way to force the water into the boiler against the pressure therein.

iVhen it is desired to stop the Working of the injector the handle g is turned in an'opposite direction, when incline c of collar L en gages inclinecof plate K, and said collarpasses under said plate to the position shown-by the drawings. At this time the thimble g will have reached the other limit of its play by striking against the end oi sleeve h, thereby forcing valve 11 again onto its seat and shutting off steam to theinjector.

N represents a valve forcontrolling the supply of Water to the injector A.

Having described my invention, whatIelaim, and desire to secure by Letters Patent of the United States, is-

The revolving spindle G, having collar L, with continuous annular inclined faces I) c, and the plate K, having inclines cl 6, and slot or opening it, for the reception of the valve-stem i of the valve I, the whole constructed so as to act in combination, substantially as described.

In testimony whereof I have hereunto set my hand.

WM. FULLER.

Witnesses:

A. B. RICHMOND, EDWD. A. PAGE.

The unseating of It is hereby certified that in Letters Patent No. 248,301, issued October 18, 1881, to- William Fuller, for an improvement ln Boiler Injectors, on page 2 of the printetl specification attached to and forming a part of said Letters Patent, in lines 25 and 37 the reference letter L was erroneously printed G; that the proper corrections have been made in the files and records pertaining to the case in the Patent Office, and are hereby made in said Letters Patent.

Signed, oonntersigned, and sealed this 8th day of November, A. D. 1881.

A. BELL,

[SEAL] Acting Seerctary of the Interior.

Uountersi gned:

E. M. MARBLE,

Commissioner of Patents. 

